The pollution characteristics and determinants of the atmospheric particulates and its determinants in Guiyang were studied through sorting and statistical analysis of the data of PM

2.5

PM

10

and meteorological series of Guiyang during 2014-2015

together with assessing of their interaction. The result showed that PM

2.5

was the main cause of atmospheric particulate matter in Guiyang

which possessed typical winterspring and summerfall seasonal characteristics. While the average of daily concentration of PM

2.5

was 28.79 μg·m

-3

in summer

which was fluctuated between 13 to 68μg·m

-3

. It was increased to 60.64 μg·m

-3

in winter

which ranged from 15 to 127 μg·m

-3

. According to the ambient air quality standard (GB3095-2012)

the over standard rate of PM

2.5

in spring

summer

fall and winter was 4.4%

0

5.5% and 5.5%

respectively. The daily distribution of PM

2.5

and PM

10

demonstrated a “twin peaks”

the first one of which occurred at 10:00 - 13:00

and it came earliest in summer while latest in winter the second peak occurred at 20:00 - 23:00

the first one of which came earliest in spring while latest in summer. This difference was mainly resulted from the change of season solar radiation and human daily routine. The spatial distribution of PM

2.5

showed roughly gradual reduction from urban to rural

the average of which was ordered as Shihuanbaozhan

>

Yejinting

>

Huaxi district

>

Xiaohe district

>

Hongbianmen

>

Maanshan

>

Wudang district

>

Tongmuling in winter

while the order was Hongbianmen

>

Yejinting

>

Xiaohe district

>

Shihuanbaozhan

>

Huaxi district

>

Wudang district

>

Maanshan

>

Tongmuling while in summer. Meteorological conditions played a dominant role in atmospheric particulate matter pollution

which was followed by human activities and the local geographical environment.